Azimo lets people transfer money from the UK to more than 100 countries at a fraction of the rates charged by banks or money transfer services.

To send money, users need to register and enter the recipient's bank account details. Azimo charges about 1% of the value of the transaction, up to a maximum of £15 per transaction.

The app claims big savings versus other money transfer methods. For example, sending £500 from the UK to Poland would cost £42.50 at a typical high street bank, £20.90 with Western Union, or £19.70 through PayPal. Amizo would set you back just £6.25.

Most banks and mobile phone networks have developed mobile money apps, most of which work across all networks. It's also worth considering O2 Wallet and Barclays' Pingit. Both are free and open to anyone.

Already used by a huge number of under-25s, WhatsApp is a cross-platform app that allows you to text people without paying.

To achieve this, WhatsApp sends messages across the internet using either Wi-Fi or the data plan you use for email and browsing the web. The big money savings come while travelling abroad using free Wi-Fi. WhatsApp is so popular there are rumours (regularly denied) that Google is on the verge of paying $1bn to buy it.

But it does not have the market entirely to itself. Other services, such as Viber, allow you to make free calls and texts to other Viber users through 3G or Wi-Fi.

Owned by auction site eBay, RedLaser enables shoppers to scan barcodes while out shopping and compare the price of an item with both offline and online stores. You can also read reviews, ratings and information about searched products.

Once you find the cheapest price you can buy the item via the app, have it delivered to your home or arrange to pick it up from a local retailer. RedLaser can also scan food labels and barcodes and alert you to any ingredient to which you might be allergic.

There are a number of other comparison shopping apps that do similar things. Idealo also lets you scan the barcode on a product and search for the cheapest place to buy it.

Calling "free" 0800 numbers or premium rate 0845 and 0870 numbers from a mobile phone can cost a small fortune. O2, for example, charges contract customers 20.4p a minute to call 0800, 0845 and 0870.

08 Wizard works by replacing 08 calls with an 01 or 02 landline number. This allows you to make the call using your free inclusive minutes if you're on a contract, or at a lower rate if you're on pay-as-you-go.

To use, simply input the 08 number and the app will come up with the corresponding 01 or 02 number and redirect your call.

Instead of having your wallet weighed down by numerous loyalty cards, Loyalli combines them into a smartphone app. Already, 600 retailers use Loyalli as their loyalty reward scheme. Each has a "QR code" which the customer scans with their phone in order to add a "stamp" to their "card". However, it is still early days for this app and others like it, such as stampme, and few of the big-name coffee chains are members.

There are numerous "daily deals" sites available now including Groupon, Wowcher, Living Social, KGB Deals and Secret Escapes. They all work in a similar way by negotiating discounts with retailers and service providers and passing on savings to consumers.

Redeemia saves you the hassle of trawling through each individual website or app each day by capturing the best deals from each site based on your preferences and location. So if you're looking for a spa day in Bristol, for example, it lists all the deals from the different providers.

The app from the website of the same name, MyVoucherCodes uses GPS to send you the best money-off deals for eating out, shopping, health and beauty, travel, entertainment etc, wherever you are.

Instead of printing a voucher off the internet and taking it to a retailer, you simply show the voucher on your phone screen at the store to get your discount. Handy if you're in Pizza Express and realise you're the only one about to pay your bill without a money-off voucher.

Whereas other apps and websites compare the cost of hotel rooms, Trivago goes one step further and compares room rates on the main hotel booking websites such as booking.com, hotels.com and lastminute.com. So if you want to stay in a particular hotel it can tell you the cheapest site to book it through.

Alternatively, if you need a hotel bed for tonight it can also use your current location to find a nearby hotel with availability and, again, the cheapest agent to book it through. Kayak runs a similar "search one and done" service for comparing hotel websites.

The AA Parking app promises that you'll never need to waste time and petrol looking for a parking space again. It directs drivers to nearby available parking spaces (where car park data is available) and enables them to compare the cost of each car park.

It's also worth taking a look at the Park-Up app, which claims to find the cheapest parking spaces in most major British cities.

Admittedly only useful if you're buying a secondhand car, but spending a few quid on this app could save you a lot of money in the long run.

For £2.99 you can check a car's history and see if it has been stolen, was an insurance write-off, is registered as scrapped or any other signs that mean you should steer well clear.

If the listed mileage seems too good to be true, a further £2.99 will bring up records from the DVLA, garages and dealers that will reveal if it has been "clocked".

For another £1.79 you can get a valuation check and find out the forecourt, private sale, trade-in and auction prices for the vehicle.

•Please share your recommendations for any other money-saving apps in the comments section below

• This article was amended on 12 April 2013. We incorrectly stated that Redeemia is available on Android phones. In addition, we incorrectly said that it would cost £32.64 to send £500 to Poland using Western Union. To clarify, using a Western Union agent would cost £20.90. Customers would be charged £37 if using the Money in Minutes service or £9.90 for the Direct to Bank Account service.